William wattie



(No Model.) I

W. WATTIE.

GUTTING ATTACHMENT FOR DOUBLE PILE FABRIC LOOMS. No. 393.947. PatentedDec. 4, 1888.

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UNITED STATES PATENT OFFICE.

' VILLIAM \VATTIE, OF \VORCESTER, MASSACHUSETTS, ASSIGNOR TO THEKNO\VLES LOOM ORKS, OF SAME PLACE.

CUTTING ATTACHMENT FOR DOUBLE-PlLE-FABRIC LOOMS.

SPECIFICATION formingpart of Letters Patent No. 393,947, dated December4, 1888. Application filed March 1, 1888- Serial No. 265,858. (Nomodel.)

To all whom it may concern.-

Be'it known that LWILLIAM WATTIE, a citizen of the United States,residing at \Vorcester, in the county of 'orcester and State ofMassachusetts, have invented certain new and useful Improvements inCutting Attachments for Double-Pile-Fabric Looms; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which, in connection with the drawings, making a part .of thisspecification, will en able others skilled in the art to which myinvention belongs to make and use the same.

My invention relates to looms used in the manufacture of double pilefabrics, and more particularly to the mechanism for cutting the pile;and the object of my invention is to provide a rigid guide for thetraveling knife or cutter, which will permit adjustment thereof fordifferent lengths of pile, and so control the movement of the knife orcutter as to cut the shortest pile without injury to the black cloth.

My invention consists in certain novel features in the construction ofthe mechanism for cutting the pile in doublepile -fabric looms, as willbe hereinafter fully described, and the nature thereof indicated by theclaims.

It will be understood by those skilled in the art that by double-pile-fabric weaving is meant that arrangement of the loom in which twoindependent warps are drawn in, each to harnesses of itsown, and thepatternchain is so arranged that with the same filling thrown first inonewarp and then in the other two independent pieces of cloth are woven,one above the other, while between the back warps, also in harnesses ofits own, are drawn the pile warps, which in the process of weaving areso bound in with the filling, first in one piece of cloth and then inthe other, as to make the pile join the two pieces of back clothtogether. After the double pile fabric is woven in the manner abovedescribed, it is cut apart while still on the loom by means of a cuttingmechanism, which severs the pile-threads without disturbing the backcloths, thus producing plush or velvet having a long or short pile, asdesired.

Referring to the drawings, Figure 1 represents a cross-section of aportion of a loom for weaving and cutting a double pile fabric and towhich my improvements have been applied. Fig. 2 represents, on a muchenlarged scale, the cuttingmechanism shown in Fig. 1 detached and takenon line a: a", Fig. 3, looking in the direction of the arrow, samefigure. Fig. 3,011 the same scale as Fig.2, represents a front view of adetached portion of the breast-beam, looking in the direction of thearrow, Figs. 1 and 2; and Fig. 1 is a plan view of the knife-blade orcutter-plate de-- tachetL' In the accompanying drawings,'1 is a portionof the loom side, 2 the bottom shaft, 3 the crank-shaft, 4E the lay, 5the harnessframes, 6 the harness-straps, 7 the back war threads, and 8the pile warp-threads, all as usually constructed and arranged in loomsof this class.

9 is the breast-beam, over which the double pile fabric 10 passes, andis cut apart, forming the two fabrics 11 and 12, by my cuttingmechanism, before passing to the take-up rolls. Thebreastbeam 9, towhich my cutting mechanism is applied, and with which it is combined,extends across the loom in the usual way and has a longitudinal slot oropening, 14, extendin through the same and made a little longer than thewidth of the fabric, 10, to be woven. Said slot 11 is made narrow at theupper side of the breast-beam 9, but is broadened out upon the underside of the breast-beam, as shown in Fig. 2, to permit of the lowerpiece of cloth, 1.2, after the double fabric 10 is cut, passing to thelower take-up roll, 13. A flat bar, 15, extends along the upper surfaceof the breast-beam 9 of the same length as the slot 11 therein, and isadjustably supported directly'over the rear upper part of said slot,with its lower edge a little above the face of the breast-beam 9, (seeFig. 2,) by means of bolts 16, passing through slots 17 in theturned-down ends 15 of the bar 15, and secured in the breast-beam 9. Bymeans of adjusting-screws 18, supported in a lip, 19, extending out intothe slot 14 directly under the turned-down ends 15 of the bar 15, theheight of the lower edge of said bar 15 above the face of thebreast-beam 9 is regulated. A second flat bar, 20, extends within theslot 14 between the turned-down ends of the bar 15, and directly undersaid bar 15, and is adjustably secured in said slot 14: by means ofbolts 21, extending through slots 22 in the ends l of said bar andsecured in the breast-beam t). The top edge of the bar 20 comes about tflush with the face of the breast-beam fl, and t by means of theadjusting-screws 23, corrcj sponding to the adjusting-screws 18 for thebar '15, the height of the upper edge of the bar 20 may be regulated.The bars 15 and it) are so adjusted relatively to each other that thewidth of the opening it between their two contiguous faces correspondsto the thickness of the double pile fabric to be woven from back to backof the fabric, which passes through the opening 24 between the bars 15and 20.

I will now describe the cutting mechanism. The reciprocating plate 25,to which is secured the knife or cutter 2G by means of a screw, 27, isfastened by screws 28 to the triangular bar 29, which is titted to slidefreely back and forth in a corresponding groove cut in the top surfaceof the breast-beam 9. (See Fig. The front free edge of the plate restson the top surface of the breast-beam .l at the edge of the longitudinalslot 1i therein, and is thickened at this part and provided with a slot:35, having beveled edges to receive the corresponding beveled sides, 3tof the knife blade or cutter :36. (See Fig. 4.) lly means of theadjustable bars 15 and 20, between whieh the double pile fabric 10passes, the center of the opening 24, between said bars, may be made tocome directly opposite the knife 20, so that the same length of pile maybe cut on both pieces of cloth, 11 and 12; or the center of said openingQl, by adjusting the bars 15 and 20, may be made not to come directlyopposite the knife :36, so that a different length of pile will be cuton the two pieces of cloth 11 and 12, and this without raising orlowering or adjusting the knife 2 5. A plate, 30, the same length as thebar 15, extends upon the upper surface of the breastbeam U, with itsinner edge, bent down over the upper edge of the breast-beam, and havingits outer edge secured thereto by means of screws 31, passing throughthe slots 32 in said plate 30. The plate 30 extends over the upper faceof the breast-beam nearly to the slot 14, and incloses the reciprocatingplate :25, carrying the knife 21;, and the inner free edge of said plateIlll extends just above the l thickened free edge of the plate :25, soas to furnish, in connection with the upper surface of the breast-beam,a bearing forholding down on the ln'east-beam the knife-bearing plate l25, and the knife 20, attached thereto, as the same are moved back andforth in the operation of cutting the pile. By means of adjusting-screws33, extending through the plate 30 and bearing upon the breast-beam, thesaid plate 30 may he raised or lowered, as desired.

The plate 25, carrying the cutter 26, is moved back and forthon thebreast-beam to f cut the pile by the ordinary mechanism, as

follows: A cord, 34, is attached to one end of the' triangular bar 29,and passes over a grooved pulley, 235, at the end of the breast beam 9,and is wound around a drum, 36, fastened upon a shaft, 237, mounted inhearings on the loom side. A corresponding cord is attached to the otherend of the reciprocating bar 29, and passes over a correspoiulingpulley, and is wound upon the drum 31 making in effect an endless cordpassing over the drum Ill and around the pulleys. Upon the other end ofthe shaft 137 is a smaller drum, 38, to which are fastened two straps,3!), upon opposite sides of said drum 3S. Thelower ends of said straps33.) are attached to the ends of levers it), which are pivoted at theirother ends on the stud t1, fastened to the loom side. In stands 4'2,upon the upper sides of the lovers 4-0, are rolls 423, which engage acompensating cam, it, the leaves of which are so con structed that whileone lever is being pushed down the other is allowed to rise, both rollstil following the shape of the cam. The cam 44 is mounted on one end ofa shaft, 46, having a bearing in a stand, 4-7, bolted to the loom side.The other end of said shaft carries a pinion, which meshes with the geart8 on the bottomshaft,

It will be seen that the revolution of the cam 44 imparts a rotarymotion through the levers t0, straps 3!), drum 38, and shaft 37 to thedrum 36, which is so proportioned as to drive the knife blade or cutter26 back and forth on the breast-beam a distance a little greater thanthe width of the cloth to be cut.

The special purpose of the plate 30, extending along over the face ofthe hreast=beam f), with its inner edge above the reciprocating plate25, carrying the cutter 26, is to act as a guide for said cutter andhold the plate down upon the breast-beam as it is moved back and forththereon, and prevent the cutter from jumping up and cutting into theupper back cloth, il 1, when a-very short pile is being cut on thefabric.

Having thus described my invention, whatI claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with the cutter-plate 25, with its outer free edgethickened and provided with a slot having beveled sides, of the knifeblade or cutter 2t), secured to said plate and provided with. beveledsides fitting into said slot in said plate to hold the cutter down atits cutting -cdge, substantially as shown and described.

2. The combination, with the breast-beam and a shield or guide supportedthereon and extending over the upper surface thereof to inclese thereciprocating cutter and act as a guide for the same, of thereciprocating plate having a slot with beveled sides, the cutter beingsupported thereon and held down at its free cutting-edge by fitting intosaid slot, substantially as shown and described.

3. In a loom for weaving double pile fabthe two pieces of fabric thatare out apart, substantially as shown and described.

\VILLIAM \VAT IE.

*itnesses:

JOHN C. DEWEY, CLARENCE M. SCHOFIELD.

